Tiffany Becker

This couldn't be true.

Authorities say there were no signs of forced entry at Jocelyn's apartment.

The wood door at the main entrance appeared secure and sturdy.

It was no surprise to investigators that Cornelius had keys to Jocelyn's place.

While they didn't live together, they had been in an intimate relationship for five years.

Jocelyn was seven months pregnant, and Cornelius was the father.

Jocelyn felt that he'd make a wonderful father.

In Jocelyn's home, investigators discovered a guest list

as well as invitations inspired by Alice in Wonderland for her upcoming baby shower.

Biondolino and his team had a lot of questions about the crime scene.

Do you see any of that?

Jocelyn's cell phone was missing.

A single shell casing from a .380 caliber semi-automatic pistol was discovered on the floor near the nightstand.

And there was something investigators had never seen before.

Potato fragments splattered in the bedroom.

Biondalino showed us how authorities believe the killer used it.

Whoever killed Jocelyn Peters may have silenced the gunshot in her apartment, but outside, surveillance cameras on the street were recording.

Shortly after 3 a.m.

on the day of the murder, one of the cameras captured an image of a white sedan.

The vehicle was eerily similar to Cornelius Green's car, a white Kia Optima.